Outlet Flap Valve, Anti Flood Non-Return Valve
Freeflush
£69
Price read from Freeflush on 2026-10-15. Check before buying.
Please note there are two versions of this valve, this is the outlet flap valve suitable for placing onto the end of plain ended pipe. The Inline flap valve version can be found here . Non Return Valves for drainage and water pipes, available in two sizes 110mm and 160mm. Slips onto the end of pipes. Effective Anti-flood Valve and Rat Barrier Drain Protection. What is a Flap Valve? Flap Valves are innovative devices used to prevent flooding caused by the back flow of storm water and sewage. Backflow can be caused by intense rain, thaw or floods. The valves prevent backflow into residential and
Freeflush's own words, read from their page.
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